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Finding the Fourth Proportional to 6,478.17, 8,943.59 and 4,356.78

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Solution

The fourth proportional to 6,478.17, 8,943.59 and 4,356.78 is: 6,014.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.17 : 8,943.59 = 4,356.78 : x
  2. Step 2: Convert to fraction form
    6,478.17/8,943.59 = 4,356.78/x
  3. Step 3: Cross multiply
    6,478.17x = 8,943.59 × 4,356.78
  4. Step 4: Simplify right side
    6,478.17x = 38,965,264.93
  5. Step 5: Solve for x
    x = 38,965,264.93/6,478.17
  6. Step 6: Final answer
    x = 6,014.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.